Molodkin V B, Olikhovskii S I, Dmitriev S V, Lizunov V V
G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Boulevard, Kyiv, UA-03142, Ukraine.
Acta Crystallogr A Found Adv. 2021 Sep 1;77(Pt 5):433-452. doi: 10.1107/S2053273321005775. Epub 2021 Aug 6.
The analytical expressions for coherent and diffuse components of the integrated reflection coefficient are considered in the case of Bragg diffraction geometry for single crystals containing randomly distributed microdefects. These expressions are analyzed numerically for the cases when the instrumental integration of the diffracted X-ray intensity is performed on one, two or three dimensions in the reciprocal-lattice space. The influence of dynamical effects, i.e. primary extinction and anomalously weak and strong absorption, on the integrated intensities of X-ray scattering is investigated in relation to the crystal structure imperfections.
对于含有随机分布微缺陷的单晶，在布拉格衍射几何条件下，考虑了积分反射系数的相干分量和漫射分量的解析表达式。针对在倒易晶格空间中对衍射X射线强度进行一维、二维或三维仪器积分的情况，对这些表达式进行了数值分析。结合晶体结构缺陷，研究了动力学效应，即初级消光和异常弱吸收与强吸收对X射线散射积分强度的影响。
